CN210164427U - Roller bit nozzle - Google Patents
Roller bit nozzle Download PDFInfo
- Publication number
- CN210164427U CN210164427U CN201920566702.4U CN201920566702U CN210164427U CN 210164427 U CN210164427 U CN 210164427U CN 201920566702 U CN201920566702 U CN 201920566702U CN 210164427 U CN210164427 U CN 210164427U
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- nozzle
- roller bit
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Abstract
The utility model relates to a roller bit nozzle, the nozzle comprises hollow cylinder, just the internal diameter of cylinder sets up to 19-22 mm. The utility model discloses simple structure, with strong points, thereby it wears chisel efficiency and reduces useless porosity to promote through the size of adjustment row sediment wind pressure, has very ideal technological effect.
Description
Technical Field
The utility model relates to a roller bit nozzle.
Background
The roller bit has been widely used as a tool for drilling rock stratum, the remarkable improvement of the bit performance directly reduces the drilling cost, especially the two performance indexes of the service life and the drilling speed which are the fastest progress in the last decade, and the improvement of the drilling speed finally determine the degree of the bit influencing the drilling cost, so that the improvement of the mechanical drilling speed and the service life of the bit are effective ways for reducing the drilling cost, in addition, the improvement of the drilling speed has larger influence on the reduction of the drilling cost than the improvement of the bit service life, the nozzles of the domestic roller bit all adopt the uniform standard inner diameter length, the size of the inner diameter of the nozzle determines the height of the slag discharge air pressure, the height of the slag discharge air pressure under the conditions of different lithologies is related to the hole forming rate of blast holes and the drilling efficiency of the roller bit, so that the adoption of the uniform standard nozzles under the conditions of different lithologies is not scientific, therefore, the existing roller bit nozzles lack pertinence, whether the drilling efficiency can be effectively improved and the waste porosity can be reduced so as to reduce the drilling cost is further discussed.
Disclosure of Invention
The utility model aims at providing a mode through the pertinence adjustment nozzle internal diameter solves and arranges a roller bit nozzle that sediment wind pressure mismatch, drilling efficiency are lower and the higher scheduling problem of useless porosity.
The utility model provides a roller bit nozzle comprises hollow cylinder, the internal diameter of cylinder sets up to 19-22 mm.
The utility model provides a roller bit nozzle sets up the internal diameter of cylinder within the scope of 19-22mm, because hardness, the firmness and the dead weight of different rocks are different, so also different to the demand of ballast removal wind pressure when putting through the chisel, if ore hardness is big, the dead weight is big, just need little nozzle high wind pressure to blow the rock ballast that the drill bit cut outside the hole rapidly, reduce the number of times that the rock ballast ground in the big gun hole repeatedly, improve and put through the chisel efficiency; for example, the silica has small hardness, poor firmness and small self weight, and rock fragments can be blown out of the hole by using a large nozzle and low wind pressure, and meanwhile, the phenomena of large hole doors, fragment falling and the like can be avoided during drilling, so that the drilling hole forming rate is improved; the following are the test results for the piercing of the silica and the ore layers, respectively:
silica:
ore:
from the test data, the drilling efficiency is improved by 0.2 time after the inner diameter of the nozzle is adjusted, the waste porosity is reduced by 0.2 time, the drilling efficiency and the waste porosity are obviously improved, and the method has an ideal technical effect.
Drawings
Fig. 1 is a schematic view of an overall appearance structure of a roller bit nozzle according to an embodiment of the present invention.
Detailed Description
The first embodiment is as follows:
referring to fig. 1, a specific structure of an appearance of a roller cone bit nozzle according to a first embodiment of the present invention is shown. The nozzle comprises hollow cylindric piece 1, and chamber 11 is spouted to its inside formation, spout the internal diameter of chamber 11 and can carry out the pertinence adjustment according to the material by the layer of digging, generally set up to 19-22mm, the utility model discloses simple structure, with strong points, thereby it drills efficiency and reduces the dead hole rate to promote through the size of adjustment row sediment wind pressure, has very ideal technological effect.
Claims (1)
1. A roller cone bit nozzle, the nozzle comprising a hollow cylindrical member, wherein: the inner diameter of the cylindrical part is set to be 19-22 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920566702.4U CN210164427U (en) | 2019-04-24 | 2019-04-24 | Roller bit nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920566702.4U CN210164427U (en) | 2019-04-24 | 2019-04-24 | Roller bit nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210164427U true CN210164427U (en) | 2020-03-20 |
Family
ID=69791629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920566702.4U Active CN210164427U (en) | 2019-04-24 | 2019-04-24 | Roller bit nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210164427U (en) |
-
2019
- 2019-04-24 CN CN201920566702.4U patent/CN210164427U/en active Active
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| GR01 | Patent grant | ||
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